NBC News reports the naked images may have been obtained through a vulnerability in Apple's iCloud service, which can store its user's content online. The hack has since been traced back to an anonymous post on underground image-sharing site, 4chan, which went public on Sunday.

"We take user privacy very seriously and are actively investigating this report,” said Nat Kerris, an Apple spokeswoman, to NBC News.

Some celebrities affected, including Ariana Grande and Victoria Justice, were quick to dismiss the reported photos attached to their identity as fakes. However, others, like Kirsten Dunst, confirmed the authenticity of the images while shifting some blame to the iCloud.

Representatives for Jennifer Lawrence and Kate Upton also issued statements on behalf of their clients, denouncing the leak's "flagrant violation of privacy," and "outrageous violation of... Kate Upton's privacy," respectively. Legal teams for both the Oscar winner and Sports Illustrated model have vowed to prosecute and pursue those responsible for obtaining or duplicating their reportedly private photographs.

The FBI also responded to the controversy on Monday, writing the agency was "aware of the allegations concerning computer intrusions and the unlawful release of material involving high profile individuals, and is addressing the matter."

Apple has reportedly fixed the software bug that could be behind the hack, according to the anonymous coder that claims to have found the vulnerability in the first place.

Authorities have yet to identify any suspects in this case, but Reddit users have put the blame on 27-year-old Bryan Hamade of Lawrenceville, Georgia as one of the culprits. However, Hamade has maintained his innocence, and told Buzzfeed, "I am not behind this."

A full-frontal selfie of the former "Roswell" and current "Girls" star surfaced this March. The photos circulated the Internet but Appleby never addressed the leak. She's no stranger to showing skin as she appeared topless in an episode of "Girls."

In 2009, naked photos of the singer surfaced online and were rumored to have been leaked by Chris Brown. Though the singer isn't shy about her body, she wasn't happy when the photos emerged. She told radio station Hot 97 that it was "the worst thing that could possibly ever happen to" her.
"I just felt like my whole privacy was taken before that [by the injury photo] and then, when that came out, I thought, 'Oh great, so now there's nothing they don't know about me and my private life.' It was humiliating and it was embarrassing," she said in December 2009.

In 2011, an ex-girlfriend of Chris Brown turned on him and leaked full-frontal nude photos online. The singer later addressed the photos on "Big Boy's Neighborhood" radio show and brushed off the scandal, claiming he wasn't ashamed of his body and has no regrets.

A suggestive photo of Miley Cyrus in a bathtub made the Internet rounds last year. The singer's photographer friend Vijat Mohindra took the photo and displayed it on his website, even though Miley was only 18 at the time it was taken (2011). The photo was said to have been taken privately for Cyrus' fiance, Liam Hemsworth.

"Jersey Shore" star and new mom Snooki has had not one, but two nude photo scandals. The pint-size star's nudes first hit the web in April 2010, when her photo was anonymously posted at the website NakedSnooki.com.
The reality star had another nude photo leak in June 2012. Her rep then told reporters, "Clearly these are old and personal photos that were not meant for the public. It's a shame someone decided to leak them for obvious personal gain."

In 2010, Kanye West snapped pictures of his genitals and sent them to multiple women who then shopped the photos around to various media outlets.
In his song "Runaway," West mentioned the incident: "She find pictures in my email/I sent this girl a picture of my d***."

In 2007, then-Disney darling and "High School Musical" star Vanessa Hudgens had nude photos leaked online. The actress, who was 18 at the time, released an apology to fans saying "I am embarrassed over this situation and regret having ever taken these photos." In February, the actress spoke about the incident again, confessing the leaked photos were "by far the worst moment of my career."

In 2008, Adrienne Bailon found herself in the middle of a leak scandal after her laptop was stolen at JFK. Once nude photos of the star were spread over the Internet, she pursued legal action.

In 2010, a topless photo of the singer, who describes herself as a "hot hobo," hit the Internet. The photo showed Ke$ha topless with an arrow pointing at her chest along with a sexually explicit description. Later, two more photos leaked that showed the singer engaging in sexual acts.

Scarlett Johansson's nude photos leaked in 2011 after they were hacked from her personal email account. The photos were meant for then-husband Ryan Reynolds, but ended up online for all to see. When asked about the photos in an interview with Vogue, the actress said: "I don't want to be a victim and say, 'Oh, well' and just hide my head in shame. Somebody stole something from me ... It's sick."

In 2005, Hilton's phone was hacked and dozens of nude photos of the socialite hit the web. Some of the photos featured Paris and a female friend kissing and getting cozy. Hilton's contact list was also leaked, which had emails and phone numbers of several celebrities.

In 2006, photos of Fall Out Boy bassist Pete Wentz's genitals showed up on the Internet. The photos were orginally posted on the gossip site Oh No They Didn't and the incident became known as "Peengate '06."
Wentz later admitted that he handled the leaked photos "pretty terribly for the first 48 hours," and went so far as to quit his band temporarily. "But then what I realized is that it's not the worst thing on the planet that's ever gonna happen," he said.

Oddly enough, Annalynne McCord tweeted a topless photo to a fan in January 2012. The first picture exposing her nipple was replaced with a cropped version. Um, thanks?

While on vacation in St. Barts with then-girlfriend Gwyneth Paltrow in 1995, Brad Pitt was photographed sunbathing nude, and the illegally procured photos were sold and published by Playgirl. Pitt sued the magazine and a judge ordered Playgirl not to deliver any more copies of its 1997 August edition, which contained the photos.

In 2010, "2 Broke Girls" star Kat Dennings had topless photos surface on the Internet. The photos showed the actress in her bedroom, lifting up her top to expose her breasts on a webcam.

Jessica Alba fell victim to a hacker who leaked her topless photos in 2010. She was pregnant at the time with daughter Honor. The photos showed her growing belly and one shot showed the star pulling down her shirt to expose her breast.

In 2010, semi-nude photos of the singer leaked online. The photos showed Aguilera nearly naked in a bedazzled harness. Reps for Aguilera claimed the photos were taken from her stylist's computer and leaked by a hacker.

A royal scandal! Last summer, nude photos of the prince partying in Vegas leaked and certainly made the queen blush. Harry was seen in the buff, covering his crotch area, with a seemingly naked girl behind him. A few months later, he spoke publicly about the incident and said he had "probably let myself down, I let my family down, I let other people down."

"The Newsroom" actress accidentally tweeted a topless picture of herself in 2012. Pill sent out an apology via Twitter claiming she had technical issues and meant to delete the photo instead of share it.

In 1984, nude photos of Vanessa Williams cost her the crown as the first black Miss America. A series of nude photographs of the beauty posing with another young woman were published in Penthouse and raked in $24 million for the magazine. Williams was effectively pressured by pageant officials to resign. She lost her title and at least $2 million worth of endorsement contracts.
In her 2009 book, "You Have No Idea," Williams addressed the scandal and wrote that at the time she worried most about how her parents would react.

Nude photos of Amber Rose leaked online two years ago. According to the New York Daily News, Amber was distraught after a trusted friend leaked the explicit pics.

In 2009, topless photos of "Twilight" star Ashley Greene hit the Internet. Greene immediately contacted her attorney, who then threatened to sue anyone who unlawfully posted the pictures. "The photos in question, which appear to be of our client, are illegal and are being unlawfully displayed. Our client intends to take legal action," her lawyer told reporters.

Back in 2008, "The Hills" star dealt with a nude photo scandal. She took several bare modeling shots after high school when she was striving for the pages of Playboy.

Paramore's lead singer fell victim to a Twitter hacker in 2010. Her account was comprised when someone leaked topless photos of the star. Luckily, Williams fought back with a wicked sense of humor and has since brushed off the incident.

A hacker got into Cassie's computer and spread topless photos of her in 2009. The singer called the incident 'foul' on Twitter and confessed the pictures were indeed hers.